| Description | Date | Identifier | |
| Front brake mechanism wear after 12,900 miles in France for chassis 6BTV. | 20th May 1937 | Box 83 \ 2 scan0037 | |
| Wear measurements on shackle-pins and spring eye bushes after tests in France. | 22th May 1934 | Box 83 \ 2 scan0038 | |
| Blueprint detailing a cracked left-hand crankcase after 16,000 miles of testing in France. | 21th May 1937 | Box 83 \ 2 scan0039 | |
| Sketch showing the extent of a crack in a silencer end-plate inspected after 16000 miles. | 21th May 1937 | Box 83 \ 2 scan0040 | |
| Blueprint detailing piston dimensions and ring gaps before and after use. | 21th May 1937 | Box 83 \ 2 scan0041 | |
| Cylinder bore dimension measurements for Block EB 2929 before and after a 16,000-mile test. | 19th Mar 1937 | Box 83 \ 2 scan0042 | |
| Blueprint diagram illustrating a crack in a B4 unit's left-hand crankcase after extensive testing in France. | 21th May 1937 | Box 83 \ 2 scan0043 | |
| Detailed analysis of wear on big end bearings and crankpins after extended mileage. | 14th May 1937 | Box 83 \ 2 scan0044 | |
| Main bearing wear and measurements after a 10,000-mile test in France. | 21th May 1937 | Box 83 \ 2 scan0045 | |
| Instructions for ageing aluminium brake drums before removing the liners. | 21th May 1937 | Box 83 \ 2 scan0046 | |
| Requesting the removal of top and bottom tanks from a 6.B.1V radiator for examination. | 24th May 1937 | Box 83 \ 2 scan0047 | |
| Communication authorising repairs to be carried out as per an estimate. | 25th May 1931 | Box 83 \ 2 scan0048 | |
| Request to check the bonnet after an examination by Park Ward found it needed two new top panels. | 26th May 1937 | Box 83 \ 2 scan0049 | |
| Letter to Park Ward Co. confirming instructions for repairs to a car body, referencing an insurer's estimate and a budget. | 27th May 1937 | Box 83 \ 2 scan0050 | |
| Issues and required modifications for a radiator on a 6.B.1V car. | 28th May 1937 | Box 83 \ 2 scan0051 | |
| Record of oil changes and attention to pressure filters for car No.1 XL at Chateauroux in 1937. | 28th May 1937 | Box 83 \ 2 scan0052 | |
| Log of mileage and observations on the performance of a felt filter (Castrol XL). | 28th May 1937 | Box 83 \ 2 scan0053 | |
| New thermostat scheme with an alternative bye-pass return pipe and associated parts. | 28th May 1937 | Box 83 \ 2 scan0054 | |
| Testing and fitting instructions for Woodhead Rear Springs for chassis 6.B.IV. | 29th May 1937 | Box 83 \ 2 scan0055 | |
| The 15,000-mile running test of a 6.B.IV. Bentley engine unit N° 4 in France. | 31th May 1937 | Box 83 \ 2 scan0056 | |
| The condition of a crankcase, crankshaft, spring drive, and connecting rods after running tests. | 31th May 1937 | Box 83 \ 2 scan0057 | |
| Performance and modifications of pistons, cylinders, valves, and fittings. | 31th May 1937 | Box 83 \ 2 scan0058 | |
| Failures of valves, fittings, wheelcase, and oil pump during testing. | 31th May 1937 | Box 83 \ 2 scan0059 | |
| Performance and durability report on a water pump, water connections, oil/petrol fittings, and an ignition distributor. | 31th May 1937 | Box 83 \ 2 scan0060 | |
| Faults and issues with ignition, temperature, and clutch components at various mileages. | 31th May 1937 | Box 83 \ 2 scan0061 | |
| The performance of gearbox, frame, engine mounting, petrol filter, and front bumper components. | 31th May 1937 | Box 83 \ 2 scan0062 | |
| The performance and condition of various vehicle components, including steering, suspension, and the petrol tank. | 31th May 1937 | Box 83 \ 2 scan0063 | |
| Modifications and performance notes for the propeller shaft, rear axle, rear hubs, and brakes. | 31th May 1937 | Box 83 \ 2 scan0064 | |
| Technical report on rear and front brake performance, issues, and modifications. | 31th May 1937 | Box 83 \ 2 scan0065 | |
| Wear, faults and modifications to exhaust fittings and the dynamo. | 31th May 1937 | Box 83 \ 2 scan0066 | |
| Performance report on an electric petrol pump, sparking plugs, and tyres/road wheels. | 1st Jun 1937 | Box 83 \ 2 scan0067 | |
| The history and performance of K.L.G. sparking plugs during testing. | 1st Jun 1937 | Box 83 \ 2 scan0068 | |
| Requesting the despatch of Girling brake shoes from a Bentley 6.B.1V to New Hudson Ltd. | 1st Jun 1937 | Box 83 \ 2 scan0069 | |
| From Sg. to Rm. regarding tests in France and related correspondence. | 8th Jun 1937 | Box 83 \ 2 scan0070 | |
| Rattling Bentley clutch and brake pedals and instructions to fit a gas tight joint. | 9th Jun 1937 | Box 83 \ 2 scan0071 | |
| Summary of standardisation updates and findings resulting from a test run in France. | 11th Jun 1937 | Box 83 \ 2 scan0072 | |
| Outcome of a 15,000-mile test in France on Bentley parts suitable for standardization. | 12th Jun 1937 | Box 83 \ 2 scan0073 | |
| Log of engineering changes, part descriptions, and associated status notes. | 12th Jun 1937 | Box 83 \ 2 scan0074 | |
| List of tested but non-standardized parts with notes on their performance. | 12th Jun 1937 | Box 83 \ 2 scan0075 | |
| Test results and notes on various automotive components. | 12th Jun 1937 | Box 83 \ 2 scan0076 | |
| List of failed special features with reference numbers, descriptions, and notes on the failures. | 12th Jun 1937 | Box 83 \ 2 scan0077 | |
| Request to fit a high pressure petrol pump to component LeC.4670. | 16th Jun 1937 | Box 83 \ 2 scan0078 | |
| Log of numerical data from multiple test runs or calculations. | 2nd Jul 1937 | Box 83 \ 2 scan0079 | |
| List of proposed parts to be tested on a Bentley car intended for France. | 2nd Jul 1937 | Box 83 \ 2 scan0080 | |
| List of modifications and specifications for an engine. | 2nd Jul 1937 | Box 83 \ 2 scan0081 | |
| Confirming that unit B-24 will be run on Duckham's NP.3 oil. | 6th Jul 1937 | Box 83 \ 2 scan0082 | |
| The standardization of the car thermostat for the 6.B.1V model. | 9th Jul 1937 | Box 83 \ 2 scan0083 | |
| Requesting modifications to the fan and thermostat due to a bypass pipe fouling the fan adjustment. | 12th Jul 1937 | Box 83 \ 2 scan0084 | |
| The despatch of a Bentley Seapak dashboard piece for an experimental chassis. | 13th Jul 1937 | Box 83 \ 2 scan0085 | |
| Letter from a coachbuilder requesting to test new steel mesh stone shields on a car under repair. | 21th Jul 1937 | Box 83 \ 2 scan0086 | |
| Letter to Park Ward & Co., Ltd. authorising the fitting of steel stone mesh shields on 6.B.IV. | 29th Jul 1937 | Box 83 \ 2 scan0087 | |
| Letter from coachbuilders Park Ward & Co. Ltd concerning the fitting of experimental stoneshields. | 30th Jul 1937 | Box 83 \ 2 scan0088 | |
| Telegram concerning the position of a spare wheel and luggage accommodation for experimental chassis 35 EX. | 29th Jul 1937 | Box 83 \ 2 scan0089 | |
| Letter to Park Ward & Co. Ltd. confirming the collection date for experimental chassis 6-B-IV. | 11th Aug 1937 | Box 83 \ 2 scan0090 | |
| Works instruction memo listing thirteen tasks to be carried out on a vehicle. | 16th Aug 1937 | Box 83 \ 2 scan0091 | |
| Letter to Park Ward & Co. Ltd. regarding a missing speedometer cable for a Bentley and confirming the dispatch of loaned parts. | 24th Aug 1937 | Box 83 \ 2 scan0092 | |
| Parts request memo to fit a clutch pedal servo to chassis 6.B.IV. | 31th Aug 1937 | Box 83 \ 2 scan0093 | |
| Requesting the dismantling and examination of a raised front engine mounting on a Bentley car for failure. | 6th Sep 1937 | Box 83 \ 2 scan0094 | |
| Instructions for new engine components with improved coring for a 15,000-mile test. | 8th Sep 1937 | Box 83 \ 2 scan0095 | |
| Instruction to manufacture and fit 9 washers for the clutch cover of a Bentley 6.B.1V. | 15th Sep 1937 | Box 83 \ 2 scan0096 | |
| Instruction to correct the routing of a thermometer capillary and mount the dial head on the dashboard. | 21th Sep 1937 | Box 83 \ 2 scan0097 | |
| Cancelling previous instructions regarding a new cylinder block and cylinder head. | 22th Sep 1937 | Box 83 \ 2 scan0098 | |
| 15,000-mile test run of a Bentley car in London and its associated insurance. | 24th Sep 1937 | Box 83 \ 2 scan0099 | |
| Outlining work to be performed on a 6-B-IV Bentley. | 28th Sep 1937 | Box 83 \ 2 scan0100 | |
| Faults found during clutch tests on a Bentley model 6-B-IV. | 28th Sep 1937 | Box 83 \ 2 scan0101 | |
| Road test report on a Bentley 6-B-IV covering a 30-mile drive in London traffic. | 28th Sep 1931 | Box 83 \ 2 scan0102 | |
| Report from Gardiner detailing a Bentley's performance during a London traffic run. | 28th Sep 1937 | Box 83 \ 2 scan0103 | |
| Clutch tests with Thermoid facings for a 6-B-IV Bentley. | 28th Sep 1937 | Box 83 \ 2 scan0104 | |
| Requesting the overnight relining of front brakes for a car, with linings already supplied. | 2nd Oct 1937 | Box 83 \ 2 scan0105 | |
| Postponement of a 15,000-mile endurance test and the initiation of clutch tests on car 6.E.IV. | 4th Oct 1937 | Box 83 \ 2 scan0106 | |
| Daily report on a 10,000 miles test car, detailing preliminary running and testing of Thermoid clutch facings and other special features. | 4th Oct 1937 | Box 83 \ 2 scan0107 | |
| Fitting of servo stops for brakes on a car prepared for France. | 5th Oct 1937 | Box 83 \ 2 scan0108 | |
| Oil leak on a steering system and the plan to fit a stiffer flange. | 5th Oct 1937 | Box 83 \ 2 scan0109 | |
| Instructing to reline the front brakes of a car using spare shoes. | 8th Oct 1937 | Box 83 \ 2 scan0110 | |
| Test report on a Bentley car model 6.B.1V, detailing noted faults and suggestions for improvement. | 11th Oct 1937 | Box 83 \ 2 scan0111 | |
| List of modifications and repairs to be carried out on a Bentley car. | 12th Oct 1937 | Box 83 \ 2 scan0112 | |
| Inquiry regarding car 6-B-IV, requesting an opportunity to test it before it is dispatched to France. | 19th Oct 1937 | Box 83 \ 2 scan0113 | |
| Modifications to car 6.B.IV, including a new rear axle and the planned fitting of an overdrive gearbox. | 20th Oct 1937 | Box 83 \ 2 scan0114 | |
| Modifications to the thermostat and cooling system for a 6.B.IV car, using parts from a 1.B.IV car. | 20th Oct 1937 | Box 83 \ 2 scan0115 | |
| Instructions for fitting a water pump, outlet, and radiator to a 1.B.IV. car. | 20th Oct 1937 | Box 83 \ 2 scan0116 | |
| Use of iron brake drums and shoes for a Bentley, pending a decision on using aluminium drums. | 25th Oct 1937 | Box 83 \ 2 scan0117 | |
| Braking issue caused by engine movement and a proposed temporary fix. | 25th Oct 1937 | Box 83 \ 2 scan0118 | |
| Adjustments to the Bentley IIA brakes and a proposal for a new integral stop on the cam levers. | 25th Oct 1937 | Box 83 \ 2 scan0119 | |
| Requesting the repositioning of a car heater due to its proximity to the clutch pedal. | 26th Oct 1937 | Box 83 \ 2 scan0120 | |
| Specification modifications for a 6-B-IV Bentley model following a 15,000-mile test. | 26th Oct 1937 | Box 83 \ 2 scan0121 | |
| Request to remove a raised front engine mounting and fit a standard one with dampers on a 6.B.IV Bentley. | 29th Oct 1937 | Box 83 \ 2 scan0122 | |
| Instructions for building up a second set of brake drums and hubs for model 6-B-IV. | 3rd Nov 1937 | Box 83 \ 2 scan0123 | |
| Test results for a 6-B-IV Bentley at Brooklands race track. | 8th Nov 1937 | Box 83 \ 2 scan0124 | |
| The accuracy of an A.C. revolution counter and speedometer, with recorded water temperatures during a road test. | 8th Nov 1937 | Box 83 \ 2 scan0125 | |
| Test report on the effects of improved steering and larger tyres on car 6-B-IV after a 160-mile run. | 8th Nov 1937 | Box 83 \ 2 scan0126 | |
| Incorrectly machined plungers for Girling Brakes 6-B-IV and the relining of front brakes. | 8th Nov 1937 | Box 83 \ 2 scan0127 | |
| Specifications for the overhaul and modification of a B-24 Unit (6.B.IV). | 9th Nov 1937 | Box 83 \ 2 scan0128 | |
| Work instructions for a 15,000 miles test on Bentley Unit No. 24. | 10th Nov 1937 | Box 83 \ 2 scan0129 | |
| List of vehicle modifications and instructions for electrical and coachwork components. | 10th Nov 1937 | Box 83 \ 2 scan0130 | |
| Scored rear brakes and the request to refit them with original shoes to test an iron liner. | 11th Nov 1937 | Box 83 \ 2 scan0131 | |
| Requesting to fit 10/43 relapped gears to a rear axle. | 11th Nov 1937 | Box 83 \ 2 scan0132 | |
| Performance and detonation tests on a Bentley unit with various ignition settings and fuels. | 11th Nov 1937 | Box 83 \ 2 scan0133 | |
| Detonation tests comparing Ethyl and Dominion fuels to assess the safety of an increased compression ratio. | 11th Nov 1937 | Box 83 \ 2 scan0134 | |
| Comparison report between the experimental 6.B.IV Bentley and the standard B.2.LS model during trials. | 12th Nov 1937 | Box 83 \ 2 scan0135 | |
| Report comparing vehicle handling characteristics, steering, and tyre performance during testing. | 12th Nov 1937 | Box 83 \ 2 scan0136 | |
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